Finding the Fourth Proportional to 23,131.84, 31,921.68 and 13,700.56

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131.84 : 31,921.68 = 13,700.56 : x
2. Step 2: Convert to fraction form
   23,131.84/31,921.68 = 13,700.56/x
3. Step 3: Cross multiply
   23,131.84x = 31,921.68 × 13,700.56
4. Step 4: Simplify right side
   23,131.84x = 437,344,892.14
5. Step 5: Solve for x
   x = 437,344,892.14/23,131.84
6. Step 6: Final answer
   x = 18,906.62